Featuresr 25l cycling backpack made of ultralight water resistant and tear resistant nylon fabricr special hole design for water bag not includedr ergonomicbent aluminum bar support on the backr mesh design on the back for maximum breathability and comfortr reflective strips for safe riding at nightr chest strap buckle with survival whistler mesh cover to hold your helmetr rain cover to be used in heavy rainr hanging system to carry your trekking pole camping mat etcr suitable for